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Re: AIX 5.2 unexec problem

From: Joe Buehler
Subject: Re: AIX 5.2 unexec problem
Date: Fri, 01 Dec 2006 08:58:25 -0500
User-agent: Thunderbird (Windows/20061025)

Richard Stallman wrote:
>     My question regards treatment of .data/.bss.  Is all of the read/write 
> data supposed
>     to be preserved across unexec?
> It is abslutely necessary to dump the bss as data because it is filled
> with Lisp objects that must be preserved in the dumped Emacs.
Is all of bss supposed to be saved?  Even the parts that come after the
marker symbols in lastfile.c?

>     Newer versions of the AIX linker reorder objects, so the manual placement 
> of
>     lastfile.o on the link line doesn't cause the desired memory layout.  The
>     option -bnoobjreorder needs to be added to the link command line to turn 
> off
>     object reordering.
> Can you fix it using that method?
I am currently building with -bnoobjreorder in LDFLAGS and that does
indeed preserve the proper
object ordering.

Joe Buehler

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